
Harmonic BalancerOutside Diameter: 7.8 in. Inside Diameter: 1.5 in. Bolt And Washer Included: No Center Bolt Length: 4.06 in. Center Bolt Thread Diameter (in): 0.63 in. Sold Individually
ACDelco 12684590 Harmonic Balancer is designed as an application-specific service replacement that supports proper fit, function, and system integration. Supports dependable engine sealing, airflow, lubrication, valvetrain, or rotating-assembly operation as applicable. Verify vehicle fitment and system configuration before installation.
ACDelco 12684590 Features:
- Application-specific design helps maintain correct fit and function during engine service
- Rotating drive-system service component for compatible applications
ACDelco 12684590 Notes:
- Verify vehicle application, position, and system configuration before installation.
Part TypeHarmonic Balancer
BrandACDELCO
Part CategoryReplacement Parts
Product TypeHarmonic Balancer
Programming RequiredNo
Bolt And Washer IncludedNo
Mounting Hole Quantity1
Keyway TypeYes
Center Bolt Thread Diameter (In)0.63
Depth1.1
Mounting Hole Diameter37.61
Inside Diameter1.5
Features & Benefits - Bullet 2GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
Features & Benefits - Bullet 3GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
Features & Benefits - Bullet 4GM regularly updates production and service part designs to integrate new materials and technologies
Product DescriptionGM Genuine Parts Engine Harmonic Balancer are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Features &#38; Benefits - Bullet 1Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
Center Bolt Thread TypeCoarse
Width (In)8.38
Center Bolt Thread Diameter (Mm)16
Center Bolt Length103
Height (In)6.25
Drive Belt TypeSerpentine
Length (In)9.12
Part FitmentDirect Fit
Outside Diameter198
Pulley Groove Quantity13
Weight (Lb)12.22
Grade TypeOE
Vendor Part Number12684590
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations